1. Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
2. Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand
3. Department of Geotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, Thailand
4. Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
5. James Cook University, Townsville, Australia
6. London School of Hygiene and Tropical Medicine, London, UK